Home / 20,498.73-28,288.47-11,998.99

Finding the Fourth Proportional to 20,498.73, 28,288.47 and 11,998.99

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Solution

The fourth proportional to 20,498.73, 28,288.47 and 11,998.99 is: 16,558.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.73 : 28,288.47 = 11,998.99 : x
  2. Step 2: Convert to fraction form
    20,498.73/28,288.47 = 11,998.99/x
  3. Step 3: Cross multiply
    20,498.73x = 28,288.47 × 11,998.99
  4. Step 4: Simplify right side
    20,498.73x = 339,433,068.65
  5. Step 5: Solve for x
    x = 339,433,068.65/20,498.73
  6. Step 6: Final answer
    x = 16,558.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.